Bottle cap or seal.



C. HAMMER. BOTTLE GAP OR SEAL. APPLIUATION FILED APR. 9,1911. n

ENEWED 1111111.20, 1913.

Patented Nov. 18, 1913.

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Eipecilication o t Letters Itatcnt. Application tiled .ilpril Si, 191]., Serial Zito. tittiit.

lite/tori ted lli ov. il. ti, Eltijili. ttcnuwcd ltl'arch f8.0, 1913: Serial No. 7553534.

provided upon the tianpges thin'eot with iiu-y struck inciting projections to engage cateo nal threads upon the necks ot the bottles or jars to be sealed. lu the manutan-Lure oit bottle caps oi" this character the use ot very thin Sheehnictal desirai-ile, lirst, :troni the standpoint .oli econi'nny oit' irnaterial, whereby 'the caps may be inanutncturcd und sold at less cosi', und, second, because ol the more ready response ot `thin metal to the action olf the :toriniiugM dies, `whereby better shaped and more accurately .tittingg' caps may be inode1 u. factor oi.`I iuipintnnee in sealing; thc bottle or `contai'i er tighti y against evaporation or the ingress oit air. ilhin nieta] also has less tendency to reaction than thicl metal and consequently will better' retain the shape into which it is struck when the pressure ol the dies is removed. The sheet metal ot' which such :aps are made7 commonly called tiliplate, comes to the manufacturer in the lforno of large rectangular sheets, composed. oli' a body ot' iron coated with tin. rlhcec sheets are printed with the design the caps are to bear, or are first coated with an acid resisting' lacquer and then printed, after Whiohthe caps are eut out and finished by one or more processes. ln this operation ot cutting out the caps, the free edges of the caps are left raw or unprotected by the tin plate and lacquer, leaving a surface which is open to attack by rust from atmospheric or salts spilled from the the process of filling. As a consequence, t e cap is rendered unsightly and unsanitary and in course of time the rust spreads over the surface of the capz frequently to such an extent as to impair or prevent the sale of the filled bottle or jar sealed thereby. In the manufacture of caps of this character, it is also desirable to provide a structure whereby bindingr of the Wall of the langeagainst the sides of the threads may be avoided, so that the cap may be fully applied irrespective of any variations container durin iii-oui the normal dii'ncnsions which may occui.' either in the threads or cap.

'.ihe object ol the present invention to provide a cap `which muy be lorrncil of very thin sheet-metal, and will yet be strongl and durable audrigid enough to withstand all the prei-mures :1nd strains telling.;1 thereon, which will comply with ull the stated requircuicnte7 und which will at the saine time be neat, orniuncnlui, and soiutcly ru-;i-prooi."

rthe .invention consists oi the features ot notion, combination and uiranggenlent o if' parte, hercinuii'tcr tuliy described and und, reference beine; had to the accomifirnwinggt, in wl'iich;- 'i l. is n pcrepimtivc view ot a bottle cup iyincmy invention. Aiiigr. 2 is :i bottom pian view ot the suino, n. portion ot the backing' diei; being4 brolren away. 'li1 in'. El ie u. `l"raifi'ncni;ary vertical section through one ide oli the cap at a pointbetween the inchino; projections and on a line through one oi the corrugations. itin'. t is a similar section. throiug'h the cap at! raciivc und ubtolte on a line through one oli the instruct: loc in projections. ling. 5 is an outer eide cievatu 'i on an enlarged scale oi? a 'fragmentary portion ci? the cap, showing' the :torni and arrangement oil one ol the locking; projections. liig. t3 is an inner side elevation oll thc sanne. liig. 7 is a diagrammatic view.i thotiringr the generall outline shape of' the tienne ot the cap. .V

i lieterring to the drawing, 1 designates the neck ot a bottle or jar of that type provided with external spiral threads 2 and an annular shoulder 3 below the threads, and in which a sealing action is obtained by the use oi? one or more sealing disks 4. clamped by the cap against the rim edge of the neck.

The cap comprises. a top 5 formed'with a depending vertical fiange 6, the intermediate portion 7 of which .is stamped out- Ward to lie in a plane beyond the top and bottom mangi-ns of the flange. This intermediate portion 7 is formed with an annular series of closely arranged vertical bulges orcorrugations 8, extending from top to bottom thereof. All of these corrugations are outstruck from the portion 7, instead of being alternately projected inward and outward. By this construction, the corrugatiene, in addition. to providing a milled in :novena i a coiled head at the lower edge oit the flange thereof, said bead being collapsed at intern vals to provide instruck locking projections. A sheet metal cap having a vertically corrugated flange formed vvith a coil enveloping its tree edge, and having said coil collapscdat lintervals to provide instructr locking projections reinforced lhy the adjacent corragations, said collapsed portions hcing flattened and extended inwardly on straight lines to render thc same more resiiii ent than the remainder ol. said flange. l l. .l sheet metal cap having a 'vertically corrngated lflange formed with a coil enveloping its 'free edge, and having said coil collapsed at :intervals to provide instrnclr looln ing projections reinforced by 'the adjacent corrngations. I

.il sheet metal bottle cap iiornied with a peraianently-closed coil at the hase ol ite tlange, lwholly enveloping, concealing and protecting the raw free edge oft the ilanger the convolntions of said coil being arranged in contactnal relation to prevent access oi moisture tothe inclosed edge ot the llange, said coil being collapsed at points `to provide instruct' lockingl projections.

t). .ft sheet metal bottle cap' having a pend ent flange formed at its base with an ont turned coil, said coil having an outer convolution, the inner portion of `which .forms a nenti-circular indentation lying wholly vvith.- in the .line ol" the flange, and provided with an incomplete inner convolution extending! :troni the'npper portion of the outer hall'.E oiE said outer coil and seated Within the said inner halt oit the convolution ol said outer coil to provide a moistmo-excluding seni, said incomplete inner convolution having free edge nptnrned and inclosed within :the outer hall ol the outer convolution ol" the coil.

7. it sheet metal bottle cap havinga depending [lange provided at its base with. a pcrmnncntlv-closed, inoisture-exclmling coil, within which the raw free edge of the flange is incloaial, said coil being' collapsed at intervals to inovide projections to engage the threadsr ol.l` a receptacle.

8. l sheet metal hottie cap provided at its hase with an onllnrned coil, said coil inclnd- `ing contacting portions arranged inside the line ot the flange and pernnlnenlly closing the coil against opening movement and the entrance otinoislnre, and the innermost contacting portion heing extended within the eoil outwardly heyond the line of the lang'e, so as to wholly inclose the ,tree edge oil the llange within the coil.

Il. .l sheet metal bottle cap provided with a rounded head at the lower edge oi: the [lange thereoil, lsaid bead being 'tlz'ittened at intervals to provide locking projections;

, ln lenliinony whereof I affix my signature in presence ot two Witnesses.

Clt-lARlJlGH lllliillilllEll. ll/itnesses Unina'rran l-l'. Nomar, lil/:n1 l", il.. Kino.

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